QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

2 km NE of Keyport, Washington

· 25 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 10 kmIsland County 49 kmMason County 59 kmKing County 63 kmJefferson County 70 kmSnohomish County 73 kmPierce County 82 kmThurston County 89 kmSan Juan County 95 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 1.9 (ml)
Depth
25 km below the surface
Felt
no reports yet
Nearest
Kitsap County, 10 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1780 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 47.7197, -122.6015. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 10 km (6 mi) NNE of here earthquakes near Kitsap County
Island County, WA 49 km (30 mi) S of here earthquakes near Island County
Mason County, WA 59 km (37 mi) NE of here earthquakes near Mason County
King County, WA 63 km (39 mi) WNW of here earthquakes near King County
Jefferson County, WA 70 km (43 mi) E of here earthquakes near Jefferson County
Snohomish County, WA 73 km (45 mi) WSW of here earthquakes near Snohomish County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

59 earthquakes have been recorded within 50 km since this one.

  1. 1.6 5 km SSW of Port Ludlow, Washington
  2. 1.6 3 km N of Kingston, Washington
  3. 2.4 1 km SE of Manchester, Washington
  4. 1.7 6 km WNW of Gorst, Washington
  5. 1.6 Puget Sound region, Washington
  6. 1.5 4 km SSW of Clinton, Washington
  7. 1.7 4 km SW of White Center, Washington
  8. 1.8 3 km WSW of White Center, Washington
  9. 1.8 3 km NNW of Picnic Point, Washington
  10. 1.9 1 km SSW of Erlands Point-Kitsap Lake, Washington
  11. 1.5 5 km SW of Des Moines, Washington
  12. 1.8 5 km SW of Des Moines, Washington
  13. 1.6 Puget Sound region, Washington
  14. 1.5 7 km WNW of Lofall, Washington
  15. 1.8 2 km SSE of Lake Forest Park, Washington

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

For this area

The largest earthquake within 50 km in our catalogue was M 4.1 on 2017-02-23 — it released about 1,900 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.